Cut-off-box machine



N0-Modem 3 'sheets-sheet 1. 0. B. SOUTHARD, GUT-055 BOX MACHINE.

No. 554,152. 125555555 P55. 4, 18951.

CMwUHLSbLw/w@ (No Model.) 3 She'eLS--Sheet'Z 2.

C. B. SOUTHARD. GUT-OFF BOX MACHINE.

. Patented Feb. 4, 1896.`

(No Model.)

- 3 Sheets-'Sheet 3. i C. BV. SOUTHARD.

GUT40PP1B0X MACHINE. No. 554,152.

Wiigessas IINTTED STATES PATENT Prien.

CALVIN B. SOUTIIARD, OF ST. ALBANS, MAINE.

CUT-OFF-BOX MACHINE.

SPECIFICATION forming part of Letters Patent No. 554,152, dated February 4, 1896. Application filed December 22, 1894. Serial No. 532,717. (No model.)

To @ZZ whom, t may concern,.-

Be it known that I, CALVIN B. SoUrHARD, a citizen of the United States, residing atSt. Albans, in the county of Somerset andState of Maine, have invented a new and useful Cut-Off-Box Machine, of which the following is a specification.

This invention relates to cut-ot-box machines; and it has for its object to provide a new and useful machine of this character adapted for cutting boards for boxes, drawers, and the like. To this end the invention contemplates a new and useful machin e of this character having efcient means for quickly and accurately cutting up box-boards in any desired lengths.

With these and other objects in view,which will readily appear as the nature ot' the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

In the drawings, Figure 1 is a perspective vienT of a box-machine constructed in accordance with this invention, showing one set of saws, which in a working machine are arranged in gang. Fig. 2 is a central vertical longitudinal sectional view thereof. Fig. 3 is a transverse sectional view on the line 0c so ot` Fig. 2. Fig. 4 is a similar view on the line 'y y oi' Fig. 2. Fig. 5 is a detail sectional View on the line 5 5 of Fig. 4. Fig. 6 is a similar view on the line G G of Fig. 2. Fig. 7 is adetail in perspective of a portion of the rectangular horizontally-sliding carriage-frame. Fig. 8 is a detail sectional view at one side of one of the self-adjusting clamp-arms for the boards. Fig. 9 is a detail view of one of the checkarms `and self-adjusting checledogs carried thereby. Fig. 10 is a detail side elevation of a portion of one side of the machine, showing a portion of the trip mechanism. Fig. 1l is a detail elevation of the trip mechanism for the shifting-lever. Fig. 12 is a detail sectional view on the line 12 12 of Fig. 8.

Referring to the accompanying drawings, 1 designates the machine-frame essentially comprising opposite connected sides 2, and having at the upper opposite sides thereof the longitudinal guide-rails 3, that are provided with the inner grooved sides t, to re- Ceive therein the opposite side tlanges 5 of the horiZontally-slidin g rectangular carriageframe 6, that carries the material to be out up to the cut-otf saws of the machine. The horizontally sliding rectangular skeleton carriage-frame G is of substantialbT the same width as the top of the machine-frame 1, and is adapted to carry in its reciprocations the parallel rest-bars 7..

The parallel rest-bars 7 are arranged in pairs according to the number of boards to be edged up at one reciprocation of the carriage-frame, and it will of course be understood that while onlya single pair of the bars 7 is illustrated as arranged within the carriageframe 6 it will be understood that the width of the machine-frame, and therefore ot the carriage-frame, may be varied to accommodate any desired number of pairs of said restbars to provide for cutting up a number of boards at one operation. The said rest-bars 7 are arranged longitudinally within the rectangular carriage-frame 7, and are adapted to have a transverse adjustment within said carriage-frame, so as to be adjusted for different lengths of boards, and the said longitudinally-arranged and transversely-adjustable rest-bars 7 are provided at their opposite ends with the notches 8, that are adapted to engage over inwardly-projected end strips 9 9, that are arranged on the opposite end bars of the frame 6, at the inner sides of such end bars, and one of said end strips, 9, is adjustably fitted to the frame 6 by means of the screws 10, engaging in the slots 1l formed in said strips to provide convenient means for tightening and loosening the said adjustable strip 9 when it is necessary to remove or replace the restbars 7, but when the notched ends of the rest-bars 7 are engaged with both of the end strips 9 and 9? the restbars will be securely held within the carriageframe, while at the same time will be free to be adjusted transversely therein.

The rest-bars 7 are provided on their lower sides with the slide-tongues 12, that work in the longitudinal guide-grooves 13, formed in the upper sides of the longitudinally-arran ged and transversely-adjustable guide-bars 14. Each of the guide-bars 14 is illustrated as being provided with a pair of the grooves 13, which are necessary when more than one pair of the rest-bars 7 are employed, as is prefei IOO able, but for convenience in understanding the construction and operation of the niachine a single pair of rest-bars 7 is illustrated in connection with the pair of guide-bars 14. The said guide-bars 14 hold the rest-bars 7 perfectly straight and properly in position within the carriage-frame 6 as t-he latter reciprocates, and the opposite ends of said guide-bars 14 are mounted for transverse adjustment on the longitudinally-slotted end frame-bars 15, connecting the opposite ends of the upper opposite side rails 3 of the machine-frame, and at the points where they rest on the end bars 15 the said guide-bars 14 have connected with the under sides thereof the screws or bolts 16, engaging in the longitudinal slots 17 of the end frame-bars 15, to provide for securing the guide bars 14 tightly in their adjusted positions. The said guide-bars 14 are further provided at a convenient point and on their under sides with the interiorly-threaded screw-boxes 18, in which turn adjusting screw-rods 19, that are mounted to turn at their opposite ends in the bearing-boxes 20, attached to thc under side of the side rails 3, and said adjusting screwrods 19 have mounted on one end thereof, at one side of the frame 1, the hand-wheels 21, that provide convenient means for turning the rods.

By reason of providing each of the guidebars 14 with a screw-box and a screw-adjusting rod therefor it will be obvious that it is simply necessary to loosen up the screws or bolts 1G at the ends of the bars 14, and then to manipulate the screw-adjusting rods to provide for transversely adjusting the guidebars within the machine-frame, and also for adjusting the rest-bars 7, that are mounted on the guide-bars and within the carriagefranie, thereby providing for varying the s pace between the parallel guide and rest bars according to the lengths in which it is desired to cut the material. The said longitudinallyarranged and transversely-adjustable guidebars 14 are provided at a point intermediate of their ends and directly at one side of the rest-bars 7 thereon with the longitudinallydisposed saw-slots 22, through which project the upper portions of the circular cut-off saws 23. The circular cut-off saws 23 are of any suitable construction and are adapted to project through the slots 22 and a sufficient distance above the rest-bars 7 to provide for cutting the boards that are placed on the restbars to be carried thereby as the carriageframe is reciprocated. The circular cut-off saws 23 are adapted to be clamped between a pair of annularly-grooved clamp-collars 24, that are feathered or splined on the transverse vertically-adjustable saw-arbor 25, that is supported within the machine-frame below the guide-bars over which the carriage-frame reciprocates. The said saw-arbor 25 is provided with a keyway throughout its entire length, so that the clamp-collars which carry the cut-off saws can be adjusted longitudinally on the said arbor to correspond with the transverse adjustment of the guide and rest bars. The annularly-grooved clamp-collars 24 are adapted to be adjusted to a position directly under the guide-bars 14, to bring the cut-off saws directly in the slots of said guidebars, and the annular grooves of the clampcollars 24 are adapted to loosely and snugly receive therein the semicircularly-recessed retaining-cleats 26, that are projected from the lower sides of the guide-bars 14 at both sides of the saw-slots 22 therein, and said retaining-cleats not only serve to hold the clampcollars 24 closely together with the saw therebetween, but also provide means for shifting the position of said collars and therefore of the saws simultaneously with the transverse adjustment of the guide and rest bars, as will be readily understood.

The transverse vertically-adjustable sawarbor 25 is journaled at its opposite ends in the half-boxes 27, formed at the upper opposite ends of a vertically-adjustable bearingframe 28. The vertically-adj ustable bearingframe 28 is arranged transversely within the machine-frame 1, and essentially comprises the opposite vertically-disposed end arms 29 and a transverse frame-bar 30 connecting said arms, and the opposite end arms 29 of said frame 28 are provided at one side with the slide tongues 31, that work in the guidegrooves 32, formed in one side of the opposite intermediate guide-standards 33, fitted vwithin the opposite sides of the machine-frame 1. The intermediate guide-standards 33 are provided with longitudinally-disposed slots 34, that receive therein the clamping-bolts 35, which are also passed through the end arms 29 of the frame 28, and serve to hold the latter perfectly stationary in its adjusted position.

When adjusted to its elevated position to bring the clamp-collars for the saws properly in engagement with the retaining-cleats 2G of the guide-bars, the half-boxes 27 at the upper ends of the end arms 29 of the frame 28 are covered by the semicircular bearing-box caps 3G, that are cast on the upper opposite sides of the frame 1, so that when the bearing-frame 28 and the saw-arbor are lowered the bearings for the saw-arbor will be left entirely open, so that the saws can be easily adjusted and arranged on the arbor, as will be readily understood.

The vertically-adjustable bearing-frame 28 is further provided at its opposite ends with the offstanding lugs 37, having threaded openings 38 therein to receive the vertically-arranged adj ustin g-screws 39, that are suitably supported at the opposite sides of the machine-frame and have connected therewith suitable gearing 40, that is controlled byhand for turning the screws to raise and lower the bearing-frame 28 when necessary, and when the parts carried by the saw-arbor have been properly adj Listed it is simply necessary to raise the bearing-frame to its elevated posi- IOO IIO

IZO

tion by the means j ust described in order to set the machine for operation after the guide and rest bars have been properly adjusted, and

said saw-arbor has mounted on one end thereof, at one side of the machine-frame, a driving-pulley 41 that receives the drivingbelt and an adj acentbelt-pulley 42, over which passes the belt 42, that provides for communicating motion to the other working parts of the machine in the manner to be presently described.

The longitudinallyarranged and transversely-adjustable rest-bars 7, that are carried by the carriage-frame 6, have attached to the upper sides thereof near one end the stop-blocks 43, against which is placed one edge of the board that is arranged on the pair of restebars to be carried up to the cut-off saws as the carriage-frame reciprocates, and arranged to work at one side of the stop-block 43 are the self-adj usting clamp-arms 44. The self-adjusting clamp-arms 44 are provided with curved ends 45, that are pivotally secured at 46 to one side of the bars 7 at the extreme front ends thereof, and the free unpivoted ends of said clamp-arms are held nor mally elevated above the plane of the restbars 7 by means of the lifting-springs 46a, attached to the bars 7 and bearing under the clamp-arms 44. The unpivoted ends of said clamp-arms 44 extend beyond the stops 43, and are provided therein with spur-openings 48, that loosely receive therein the headed clamp-spurs 49, the lower pointed ends of which are adapted to engage in the top of the board that is placed against the stops 43, and the upper headed ends of said spurs have arranged thereover the free ends of leafsprings 50, that are made fast at one end, as at 51, on top of the clamp-arms 44, and said springs 50 allow the spurs to yield upwardly to adjust themselves to any unevenness or hardness of the board with which they are carried into engagement.

The selfadjusting clamp-arms 44 are pro vided at a point intermediate of their ends with the depending adj Listing-arms 52, which carry at one side of their lower ends the guide-rollers 53, that travel on and under the longitudinallydisposed adjusting-rails 54, that are attached to one side of the guidebars 14 below the rest-bars 7. The said rails 54 extend from a point near the front end of ,the machine inward to a point intermediate of the ends of the saw-slots 22 in the guidebars 14, and said adjustingrails 54 are provided at their outer or front ends with the lower or under beveled extremities, 55, and at their inner ends with the upper beveled extremities, 56. When the carriage-frame is started at the beginning of its travel to carry the board to be cut up toward the saws, the

rollers 53 at the lower ends of the arms 52 will engage with the frontunder beveled eX- tremities, 55,0f the rails 54, and will be guided under said rails and thereby cause the clamparms 44 to be drawn firmly downward onto the rollers 53 to such a position that on the return travel of the carriage-frame the rollers will ride over the inner upper beveled eX- tremities, 56, and onto the top of the said rails, and during the return travel of the carriageframe the said clamp-arms will be held in their elevated positions until the rollers 53 pass beyond and drop below the front eX- tremities of the said rails 54.

The carriage-frame 6 continues sufficiently far in its travel in one direction to carry the cut board onto the spring table-strips 57. The spring table-strips 57 consist of iiat strips of suitable spring material that are secured fast at their outer ends, as at 58, to one side of the guide-bars 14 at one end thereof, and said strips are provided with inner downwardly-curved ends 59, having verticallydisposed slots 60 to receive the limiting pins or screws 61, that are passed through said slots into the sides of the guide-bars 14 at an intermediate point. The said spring tablestrips are normally disposed above the plane of the rest-bars 7, carried by the carriageframe, and one end of said carriage-frame slides under said table-strips and serves to retain them in their proper elevated position. As the carriage-frame travels in one direction it carries the cut board onto the inner,

yielding ends of the strips 57 and when the clamp-arms 44 have become automatically disengaged from the board the same will rest on the elevated table-strips, where it can be easily taken off, and allows the carriageframe to be returned to its starting-point for another board.

At an intermediate point between the opposite ends of the machine-frame, where the cut board is carried onto the table-strips 57, is arranged a pair of depending check-arms 62. The depending check-arms 62 are provided at their lower ends with a pair of side lugs 63, between which are pivoted the upper ends of the gravity check-dogs 64, that are provided with liat and beveled sides 65 and 66 respectively. Normally, the said checkdogs hang in a vertical or upright position, so that the board that is carried onto the tablestrips 57 will be moved against the beveled sides of said dogs and will lift up the lower ends of the same so as to freely pass onto the said tablestrips, and after the board has passed beyond the said dogs the latter will automatically drop to a normal position and will prevent the board from being carried back with the carriage-frame as it returns to its starting-point. The depending check-arms 2 are provided at their upper ends with the attaching collars G7, that are adjustably IOO IIO

clamped on the transverse supporting-rod 68, that is supported transversely above the reciprocating carriage-frame, and is detachably fitted at its opposite ends in the collars G9, formed at one end of the bracket-rods 70, that are arranged above the machine-frame at opposite sides and are adj ustably fitted at their ends opposite the collars G9 in the collars 71, formed at the upper ends of the offstanding bracket-arms 72, attached to the sides of the machine-frame at one end thereof. The specific manner of supporting the check-arms, as just described, provides for an adjustment thereof to correspond with the adjustment of the other parts of the machine.

The reciprocating carriage-frame 6 is provided on the under side of its opposite side bars With the longitudinal rack-bars 7 8, with which mesh the feed-pinions 74, mounted on opposite ends of the transverse clutch-arbor 75. The transverse clutcharbor 75 is arranged transversely under the guide-bars 14C, and is journaled at its opposite ends in suitable bearings 7 6, arranged at opposite upper sides of the maehineframe. The said transverse clutch-arbor 7 5 is provided at a suitable point thereon with a pair of loose spaced clutch-pulleys 77 and 78, respectively, both of which pulleys are provided at their inner adjacent ends with clutch faces 79, and the shoulders of the clutch-face of one of said pulleys is reversely disposed to the shoulders of the clutch-face of the other of said pulleys. The pulley 77 is adapted to be driven in one direction by means of a crossed belt 80, which passes over a pulley 81, mounted on the feedshaft 82, j ournaled transversely in suitable bearings 83, arranged at one end of the machine-frame 1. The shaft 82 also has mounted thereon intermediate of its ends a pulley 84, over which passes a straight belt 85, that also passes over the clutch-pulley 78 to provide for rotating the same in a direction opposite to the rotation of the pulley 77. The shaft 82 carries upon one end an end pulley 87, over which passes a belt 88, that is driven from the pulley 89 on one end of a counter-sl1aft 90, journaled transversely in suitable bearings 91 at the base of the machine-frame, and carrying upon the end opposite the pulley 89 a belt-wheel 92, over which passes the belt 42, that is driven from the pulley 42 at one end of the saw-arbor.

Feathered on the clutch-arbor 7 5, between the clutch -pulleys 77 and 78, is a double clutch-collar 93. The clutch-collar 98 turns with the arbor 75, and is arranged to slide thereon between the two clutch-pulleys. The said clutch-collar 93 is provided with the opposite reversely-arranged cl utch-faces 94:,that are adapted to respectively engage with the clutch-faces or ends of the pulleys 77 and 78, and said clutch-collar is further provided with an intermediate annular groove 95, that loosely receives the upper bifurcated end 97, of the shifting-lever 96, that is pivoted at its lower end, as at 98, to one of the lower transverse bars of the machine-frame. The shifting-lever 96 is provided at an intermediate point with a transverse opening 99, through which loosely Works a transverse shifting-rod 100, that is arranged to also work in the opposite perforated bracket-s 101, attached to and depending from the opposite upper sides of the machin e-frame. The said transverselyarranged shifting-rod 100 has mounted thereon at both sides of the lever 96 the tappetcollars 102, that are adapted to engage against the said lever 9G, to move the same in either direction, and the said collars are normally held away from thelever 96, so that the rod 100 will normally remain in a proper position by means of the bowed springs 103, attached to the sides of the lever 9G and also to the eollars 102.

The shifting-rod 100 has attached to its opposite ends the upwardly-disposed shiftingarms 104:, that are arranged to work at one side of the offstanding guide-blocks 105, that prevent the said arms from being moved in a direction to turn or twist the shifting-rod, and the upper extremities of said shiftingarms are adapted to be engaged at their inner sides by the inclined cam-plates 10G, that are attached to opposite sides of the carriageframe 6, and are reversely disposed, so that when the carriage-frame has reached the limit of movement in either direction one of said shifting-arms will be moved outwardly in order to provide for automatically shifting the clutch-collar to provide for automatically reversing the travel of the carriage-frame, as will be easily understood.

The pivoted shifting-lever 96 has projected from both sides thereof catch-pins 107, that are adapted to be engaged at both sides of the lever by the latch-bars 108. The latchbars 108 are arranged above the projected catch-pins 107, and are provided in their lower edges with the catch-notches 109, that are adapted to engage with the said catch-pins to lock the lever 96 in a position to hold the clutch-collar in engagement with either of the clutehepulleys. The latch-bars 108 are of different lengths and the notches of the two latch-bars are out of alignment, so that one of the latch-bars will provide for holding the clutch-collar in engagement with one of the clutch-pulleys and the other latch-bar will provide for locking the clutch-collar in engagement with the other clutch-pulley. Both of the latch-bars 108 are pivotally mounted intermediate of their ends, as at 110, within a suitable supporting-boxing 111, fastened to and projected below one of the depending' brackets 101,and at one side of the pivots of the latch-bars are arranged suitable springs 112, that provide for normally holding the notched ends of the latch-bars onto the catch-pins of the shifting-lever. The spring-elevated ends of the latch-bars 108 project slightlybeyond the outer side of the adjacent bracket 101, and have working thereover opposite end portions of a pivoted trip-plate 114, that IOO IIO

is pivoted intermediate of its ends, as at 115, and has connected therewith an upwardlydisposed trip-lever 116, the upper end of which is adapted to be engaged at both sides by the trip rods or arms 117, adjustably fitted at one end in the collars 11S at the outer ends of L-shaped bracket-arms 119, that are fastened to one side of the carriage-frame 6 at spaced points, so that the trip rods or arms 117 will engage with the trip-lever 116 at both limits of movement of the carriage-frame. Now it will be observed that while the carriage is traveling in one direction one of the latch-bars will hold the clutch-col lar engaged with one of the clutch-pulleys, and the other latch-bar will be then disengaged from the catch-pin on which it rests. When the carriage'reaches the limit of movement in the direction in which it is traveling the trip-lever 116 will be engaged by one of the trip rods or arms 117, and will cause the latchbar that is engaged with one of the catch-pins to be disengaged from such catch-pin and allow the shifting-lever to be moved in a direction to shift the clutch-collar into engagement with the other one of the clutch-pulleys so as to immediately and automatically reverse the travel of the carriage, and the latchbar which was before inactive will be sprung into engagement with the catch-pin on which it works to lock the shifting-lever in its shifted position. y

Changes in the form, proportion, and the minor details of construction maybe resorted to without departing from the principle or sacrificing any of the advantages of this invention.

I-Iaving thus described the invention, what is claimed, and desired to be secured by Letters Patent, is-

- 1. In a box-making machine, the machineframe, a skeleton rectangular carriage-frame mounted to slide horizontally on the machineframe and provided at its opposite ends with transverse inwardly-projected end strips, parallel longitudinal rest-bars carried bythe carriage-frame and provided with notched ends slidably engaging said inwardly-projected end strips, one of said end strips having an independent transverse adjustment whereby the same may be readily disengaged from one end of the rest-bars to provide for the removal of the latter, means for positively adjusting the rest-bars transversely within the skeleton carriage frame, and a saw carrying arbor arranged transversely under the carriageframe, substantially as set forth.

2. 4In a box-making machine, the machineframe, a rectangular skeleton carriage-frame mounted to slide horizontally on the machineframe, longitudinally-arranged guide-bars mounted on the machine-frame and provided in their upper sides with longitudinal guidegrooves, parallel rest-bars adjustably fitted within and carried by the carriage frame, said rest-bars being provided on their lower Sides with longitudinal slide-tongues working in the grooves of said guide-bars, a transverse saw-arbor arranged under the guide-bars, separate pairs of clamp-collars feathered on the saw-arbor and adapted to clamp therebetween cut-off saws, said clamp-collars having a loose lock connection with the guidebars so that the former will move in one direction with the latter, and means for transversely adjusting said guide-bars to secure a simultaneous adjustment of the rest-bars and the saws, substantially as set forth.

3. In a box-making machine, the machineframe, the carriage-frame mounted to slide on the machine-frame, longitudinally-arranged guide-bars mounted on the machine-frame under the carriage-frame and provided at an intermediate point with saw-slots and semicircular recessed retaining-cleats proj ected from the lower sides thereof at both sides of the saw-slots, the rest-bars fitted within the carriage-frame and working on the guide-bars at one side of the saw-slots, a transverse sawarbor arranged under the guide-bars, separate pairs of annularly-grooved clamp-collars feathered on said saw-arbor and adapted to clamp therebetween edging-saws, the annular grooves of said clamp-collars being adapted to receive therein the retaining-cleats of said guide-bars, and means for transversely adjusting said guide-bars to secure a simultaneous adjustment of the rest-bars and the saws, substantially as set forth.

4. In a box-making machine, the combination of the machine-frame the longitudinal side bars of which are provided on their under sides with fixed depending semicircular bearing-box caps 36, said machine-frame being provided at opposite sides with intermediate guide-standards having vertical longitudinal slots and guide-grooves formed in one side, a vertically-adjustable bearing-.frame having opposite connected end arms provided with integral half-boxes at their upper ends, and slide-tongues at one side which loosely and slidably register in the guide-grooves of said standards, the saw-arbor mounted in said half-boxes and carrying cut-off saws, means for vertically adjusting the bearingframe to adjust the half-boxes to a tight registerin g t against said fixed bearing-box caps to form complete bearing-boxes which entirely surround the extremities of the sawarbor, clamping-bolts passed through the end arms of the bearing-frame and through the vertical longitudinal slots of the guide-standards to hold the bearing frame tightly clamped to the guide-standards when either elevated or lowered, and the feed-carriage, substantially as set forth.

5. In a box-making machine, the machineframe provided'at upper opposite ends with longitudinally-slotted end bars, a carriageframe mounted to slide horizontally on the machine-frame, parallel guide-bars arranged longitudinally under the carriage-frame and resting on said end frame-bars, each of said guide-bars being provided on its underI side IOO IOS

IIO

near the same end of the machine-frame with an interiorly-threaded screw-box, separate turning adjusting screw-rods supported at one end of the machine-frame and engaging in the screw-boxes of the guide-bars, screws or bolts engaging in the slots of said end frame-bars and connected with the guidebars, transversely-adjustable rest-bars car- `ried by the carriage-frame and having a sliding lock connection with the guide-bars, the saw-arbor and clamp-collars feathered on the saw-arbor and adapted to clamp therebetween cut-od saws, said clamp-collars having a loose lock connection with the guide-bars, substantially as set forth.

6. In a box-making machine, the combination of the machine-frame, guide-bars arranged longitudinally on the frame and provided with saw-slots at an intermediate point, and at one side with longitudinally-disposed adjusting-rails provided with outer under beveled extremities and inner upper beveled extremities, the sliding carriage-frame carrying rest-bars working on the guide-bars at one side of the saw-slots, spring-elevated self-adjusting clamp-arms pivoted at one end to one side of the rest-bars and provided in their unpivoted ends with spur-openings, and at an intermediate point with depending adjusting-arms carrying at their lower ends guide-rollers adapted to travel ontop of and under said adjusting rails, headed spurs fitted in said spur-openings, leaf-springs attached to the clamp-arms and arranged to bear on the heads of said clamp-spurs and a transversely arranged saw arbor carrying saws projecting through the saw-slots of said guide-bars, substantially as set forth.

7. In a box-making machine, the combination of the machine-frame, the longitudinallyarranged guide-bars, the rectangular skeleton sliding carriage-frame mounted to slide on the machine-frame over the guide-bars and of substantially the same width as the main frame, rest-bars mounted within and carried by the carriage-frame, a transverselyarranged saw-arbor carrying cut-off saws projecting through slots in the guide-bars at an intermediate point, and spring table-strips secured fast at their outer ends to one side of the guide-bars at one end thereof and provided with inner downwardly-curved ends having verticallydisposed slots loosely receiving pins projected from one side of the guide-bars at an intermediate point, said spring table-strips being normally elevated above the plane of said rest-bars and being arranged directly over one end of the skeleton carriage-frame which slides thereunder, substantially as set forth.

8. In a box-making machine, the machineframe, an intermediate saw-arbor carrying cut-oif saws, a horizontally-sliding rectangular carriage-frame working over the saws, normally-elevated spring table-strips for t-he cut material, arranged at one side of the sawarbor and disposed normally above the plane of one end of the carriage-frame which slides thereunder, an adjustable frame having a transverse supporting-rod arranged above the carriage-frame, transversely-adjustable check-arms attached to and depending from said supporting-rod and provided at their lower ends with a pair of side lugs, and normally-upright gravity check-dogs pivoted at their upper ends in the side lugs of said check-arms and disposed adjacent to the inner ends of said table-strips to prevent the return of thc material with the carriage, said dogs being provided with flat and beveled side edges respectively, substantially as set forth.

9. In a box-making machine, the combination of the machine-frame, the saw-arbor carrying saws, a horizontally-sliding carriageframe provided with opposite longitudinal rack-bars, a transverse clutch-arbor carrying at opposite ends feed-pinions meshing with said rack-bars, a pair of spaced clutch-pul- 'leys loosely mounted on said clutch-arbor and adapted to be rotated in reverse directions, a clutch-collar feathered on the arbor between said clutch-pulleys, a shifting-lever connected with said clutch-collar, means for automatically adjusting said shifting-lever by the movement of the carriage, and an automatic lock device for said shifting-lever, substantially as set forth.

10. In a box-making machine, the combination of the machine-frame, the saw-arbor, a horizontally-sliding carriage-frame provided with opposite rack-bars, a transverse clutcharbor carrying opposite feed-pinions meshing with said rack-bars, a pair of spaced clutchpulleys loosely mounted cn said clutch-arbor and adapted to be rotated in reverse directions, a double clutch-collar feathered on the arbor between the clutch-pulleys, a shiftinglever pivotally supported within the machineframe and connected at its upper end with 'said clutch-collar, a longitudinally-movable shifting-rod supported below the arbor and arranged to work through an opening in the shifting-lever, tappet-collars iitted on said shifting-rod at both sides of the shifting-lever, springs arranged at both sides of the shiftinglever and connected with the shifting-rod, upwardly-disposed shifting-arms attached to the opposite ends of the shifting-rod, and reversely-disposed inclined cam-plates attached to opposite sides of the carriage-frame and adapted to move against said shifting-arms at both limits of movement of the carriageframe, substantially as set forth.

ll. In a box-making machine, the combination of the machine-frame, a horizontally-sliding carriage-frame provided with opposite rack-bars, a transverse clutch-arbor carrying feed-pinions meshing with said rack-bar, clutch devices mounted on said arbor to provide for the reverse rotation thereof, an automatically-adjusted shifting-lever for such clutch devices provided with catch-pins projecting from both sides thereof, spring-actu- IOO IIO

of the carriage-frame at spaced points and adapted to engage at both sides of said triplever, substantially as set forth.

In testimony that I eiainl the foregoing` as 15 my own I have hereto affixed my signature n the `presence of two witnesses.

CALVIN B. SOUTHARD.

Witnesses G. L. BIGELOW, II. L. WHITTIER. 

